E2B — Cloud Sandboxes for AI Code Execution

What is E2B?

E2B provides secure, isolated cloud sandboxes for AI agents to execute code. Each sandbox is a micro-VM that spins up in ~150ms with a full Linux environment — perfect for code interpreters, data analysis agents, and AI-generated code execution.

Answer-Ready: E2B provides secure cloud sandboxes (micro-VMs) that spin up in 150ms for AI agents to execute code, install packages, and access filesystems safely.

Core Features

1. Code Interpreter SDK

from e2b_code_interpreter import Sandbox

sandbox = Sandbox()

# Run Python with automatic package installation
execution = sandbox.run_code(
    "import pandas as pd\\n"
    "import matplotlib.pyplot as plt\\n"
    "df = pd.DataFrame({\'x\': [1,2,3], \'y\': [4,5,6]})\\n"
    "df.plot()\\n"
    "plt.savefig(\'chart.png\')\\n"
    "print(df.describe())"
)

print(execution.text)      # stdout
print(execution.results)   # rich outputs (charts, tables)

2. Custom Sandbox Templates

# e2b.Dockerfile
FROM e2b/base
RUN pip install numpy pandas scikit-learn
RUN npm install -g typescript

e2b template build --name "data-science"

3. Filesystem Access

# Upload files
sandbox.files.write("/home/user/data.csv", csv_content)

# Download results
content = sandbox.files.read("/home/user/output.json")

# List files
files = sandbox.files.list("/home/user/")

4. Long-Running Sandboxes

# Keep alive for up to 24 hours
sandbox = Sandbox(timeout=3600)  # 1 hour

# Pause and resume
sandbox_id = sandbox.pause()
# ... later ...
sandbox = Sandbox.resume(sandbox_id)

5. Framework Integrations

# OpenAI Assistants
from e2b_code_interpreter import Sandbox
# Use as code_interpreter tool handler

# Vercel AI SDK
# Built-in e2b sandbox support

# LangChain
from langchain_e2b import E2BCodeInterpreterTool

Use Cases

FAQ

Q: How secure are the sandboxes? A: Each sandbox is an isolated Firecracker micro-VM with no network access to other sandboxes.

Q: Pricing? A: Free tier with 100 sandbox hours/month. Pay-as-you-go after that.

Q: Supported languages? A: Any language that runs on Linux — Python, Node.js, Go, Rust, etc.